Home / 21,765.44-30,036.60-12,812.96

Finding the Fourth Proportional to 21,765.44, 30,036.60 and 12,812.96

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Solution

The fourth proportional to 21,765.44, 30,036.60 and 12,812.96 is: 17,682.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.44 : 30,036.60 = 12,812.96 : x
  2. Step 2: Convert to fraction form
    21,765.44/30,036.60 = 12,812.96/x
  3. Step 3: Cross multiply
    21,765.44x = 30,036.60 × 12,812.96
  4. Step 4: Simplify right side
    21,765.44x = 384,857,754.34
  5. Step 5: Solve for x
    x = 384,857,754.34/21,765.44
  6. Step 6: Final answer
    x = 17,682.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.